If evolution was true, and humans and chimps did have a common ancestor, we would expect to find something that is half-monkey/half-man. These intermediate stages where one species supposedly evolves into another species are called “transitional forms.”

Darwin acknowledged that the absence of intermediates put his theory in doubt, but he attributed their lack to the scarcity of fossils at that time. However, nearly 150 years later, the situation hasn’t changed. After scientists have searched diligently for a century and a half for evidence, we now have over 100 million fossils catalogued in the world’s museums, with 250,000 different species. Adapted from How to Know God Exists (Bridge Logos).

Jeremiah 27:5 I have made the earth, the man and the beast that are on the ground, by My great power and by My outstretched arm, and have given it to whom it seemed proper to Me.

Homo erectus, Australopithecus africanus, Australopithecus afarensis, Ardipithecus ramidus, Orrorin tugenensis, and Sahelanthropus tchadensis are all intermediate fossils (“transitional forms,” as you put it) discovered after Darwin’s death. So in the last 150 years a lot has changed, you just choose to ignore it.